Nut-lock.



PATENTBD 00T. 30,-1os.

R. J. KIDENEY.

NUT LOOK.

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ROBERT J.,K1DENEY, OF BUFFALO, NEW YORK.

NUT-Lock.

Specication of Letters Patent.

Patented Oct. 30, 1906.

appiimionsieanne 24,1905. serinirazeenaa.

To al whom it may concern:

Be it known that I, ROBERT'J. KiDENEY, a cltizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Nut-Locks, of which the folowmg 1s a specification.

This invention relates to improvements in locking devices for nuts, and has for one object to provide a simple and economicalmeans of ocking the nut in position upon the bolt in such a manner that the same cannot be removed without destroying the bolt.

. It has been found in use that the locking devices heretofore constructed are ex ensive to manufacture and in a short time ecome They and this renders it possible for malicious persons to easily remove the nuts, and thereby cause serious damage.

portion thereof is moreor less exposed, so t iat when used out of doors the water and moisture have ready access thereto and cause the same' to quickly rust and wear away.

Another object of this invention is' to so construct the locking device that when the nut is secured in position on the bolt the locking device is concealed within the nut and is therefore inaccessible and cannot be operated to release the nut. It is also fully protected by the nut from the action` of water and moisture, and therefore does not easily become rusted and inoperative.

In the accompanyin drawings, Figure 1 is a side elevation of a bo t provided with a nutlock 'embodying the invention with a nut in position on the bolt shown in section. Fig.

2 is a longitudinal sectional elevation of the,

same. Flg. 3 is a cross-sectional elevation of the same inline 3 3, Fig. 2. Fig. 4 is an enlarged cross-section of .the bolt and nut-lock. Fig. 5 is an end view of the nut. Fig. 6 is a erspective view of the locking-sprin detac ed.

Like le -ters of reference re er to like parts in the several figures.

A re resents a threaded bolt, the threads of whic are cut-away for a short distance on one side to form the flat segmental ocket a. A longitudinal slot a is formed in t e bolt of `the length of this ocket a and at an angle thereto. In this s ot a is secured the locks ring B. This spring consists of a V- shaped iece of metal having upper arms or ends b b9 extending laterally4 in opposite di- Their construction is also such that the device or locking ;rections, one of said ends b being consider'- ably lon er than the other. The lower the threads of the nut C when the nut isy screwed upon the bolt over the spring.

-On the' inner circumference of the nut C are' lon itudinally extending grooves c, formed-in t e threads of the nut. The springarm b is arranged so that it extends at an angle in the direction of the movement of the nut when the same is being screwed u on the bolt. The arm therefore slides readi y over the grooves clin the nut and does not prevent the screwing u of the nut. When, however, it is attempte to turn the nut in the opposite direction and remove the same, the springarm l2 at once engages oneof the grooves cand prevents further movement.

It is obvious that the angle of the slot a and of the extending arms b b can bechanged as desired and that the spring can bel secured in the slot by various means. I therefore do not desire to limit myself to the particular form of spring and method of attachment shown, as any spring securedto the `bolt and having an arm or portion extending of greater thickness can be emplo ed to pre' -vent the nutfrom 'being screwed evon'd the locking device. It is obvious, also, that, if desired, several locking devices 'might be arranged a't different oints along the same bolt. It is also possi le, instead of emplo ing a narrow slot and spring, as shown in t e drawings, to construct the slot and spring of much greater length, so that the same will extend for some. distance longitudinally along the bolt. This would permit a much greater adjustment of the nut. y In such a construction, however, it is desirable to increase .the length of the nut accordingly or place washers p01" tion of t e spring is forced into the slot al' and is held in position therein by the pressure IOO IIO

between the nut and the part through which the bolt passes, as otherwise the nut may be screwed such a distance on the bolt that the outer end of the spring will become exposed. 5 This would cause the spring to rust and would also permit the same to be tampered with to unlock and remove the nut.

f I claim as my invention- 1. In a nut-locking device, the combinaro tion with a nut having internal grooves and a bolt, of a nut-locking spring having a ortion secured in the bolt and a free arm W ich extends `in a direction transversely of the bolt and inclines away from the same and is adapted'to engage with its end edge in said grooves of the nut to hold the latter from unscrewing, said spring being of less width than the nut and being so located as to be completelyl covered and protected by the nut when the same. is screwed home,v substantially as set forth.

2. ln a nut-locking device, the combination with a nut having internal grooves, oi." a bolt having a segmental portion thereof removed forming a recess and a pocket leading inwardly from said recess toward the axis of the bolt in a substantially radial direction, said recess and pocket being arranged intermediate of the ends of the bolt, and a locking in the pocket and retained therein by'frictional contact with the side Walls of the same; and having a portion forming a detent extending at an angle to the double portion and designed to engage with the said grooves, 35 substantially as set forth.

3. In a nut-locking device, the combination with a nut having internal grooves, of a bolt having a segmental portion removed forming a recess and a wardly therefrom substantially to the axis of the bolt and in a substantially radial direction, said recess and pocket being located a distance from the ends of the bolt, and a having its intermediate portion doubled and inserted within the pocket and one end projecting at an angle to the double portion with its end edge in position to en age with forth.

`Witness my hand this 16th day of June, 1905.

ROBERT J. KiDnNirY.

Witnesses:

EDWARD C. HARD, A. L. MoGEE.

member having a double spring portion held 3o pocket leading in- 4o locking member comprising a spring-strip 4 5 the grooves in the nut, substantia ly as set 5o 

